What is CVE-2021-25765?

CVE-2021-25765 is a high-severity vulnerability in Jetbrains Youtrack, classified under Cross-Site Request Forgery (CSRF). CVSS score: 8.8/10. Published 2021-02-03.

How severe is CVE-2021-25765?

High severity. CVSS v3 base score is 8.8 out of 10.

Is CVE-2021-25765 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

CSRF in Jetbrains Youtrack

CVE-2021-25765

In JetBrains YouTrack before 2020.4.4701, CSRF via attachment upload was possible.

Vulnerability class: CSRF (Cross-Site Request Forgery)

Published 2021-02-03 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.007 (52.9th percentile), scored 2026-10-23.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 52.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Jetbrains Youtrack

Weakness classification (CWE)

CWE-352 — Cross-Site Request Forgery (CSRF)

Public proof-of-concept exploits

References

blog.jetbrains.com (Product)
blog.jetbrains.com/blog/2021/02/03/jetbrains-security-bulletin-q4-2020/ (Vendor Advisory)

Frequently asked questions

What is CVE-2021-25765?: CVE-2021-25765 is a high-severity vulnerability in Jetbrains Youtrack, classified under Cross-Site Request Forgery (CSRF). CVSS score: 8.8/10. Published 2021-02-03.
How severe is CVE-2021-25765?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2021-25765 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.